#5350 Voice preview unsupported

The "Voice preview unsupported" error typically occurs when the selected TTS channel does not support live preview, or when essential configurations (API key, network proxy) are missing.

Solutions:

1. Switch to a supported channel – Edge-TTS (free, no key required) supports preview for most languages. Select it from the dropdown and try again.
2. Check network/proxy – If you are in mainland China and using services like Google/OpenAI/Gemini, ensure a valid proxy is set in 菜单 → 工具 → 高级选项 → 通用设置 → 网络代理 (e.g. http://127.0.0.1:7890).
3. Verify API key configuration – For paid channels (e.g. OpenAI TTS, Azure TTS), go to 菜单 → TTS设置 and make sure the corresponding API key and endpoint are correctly filled.
4. Run the full task instead – Preview might not be available for some local TTS models (e.g. VITS, Piper). You can safely ignore the preview and proceed with the actual translation/dubbing task – the final output will work.

If the problem persists, please locate the latest log file in logs/ folder inside the software directory and share the last 30 lines of error messages.